Metallic button.



NITED STATE-s Patented March 8, 1904.

' PATENT OFFICE.

METALLIC BUTTON.

SPECIFICATION forming part of Letters Patent No. 754,125, dated March 8,1904.

Application filed November 18, 1901. Serial No. 82,703. (No model.)

To all whom it may concern:

Be it known that I, GEORGE J. CAPEWELL, a citizen of the United States,residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inMetallic Buttons, of which the following is a specification.

This invention relates to the construction of those metallic buttonswhich have a large head and attached socketed shank and are designed tobe fastened to an article of wearing-apparel by means of a metallictack.

The object of the invention is to construct a light, strong, andattractive button from simple parts in a cheap manner.

The button which embodies the invention has a socketed flanged shank anda large thin head that is held to the end of the shank opposite theflange by beads that are produced each side of the opening through thehead by transverse expansion of the shank under longitudinalcompression. This button is formed by placing the flanged end of thehollow cylindrical shank upon an anvil and tightly clamping the lowerportion of the shank between conforming-jaws, then after inserting theend of the shank through the central opening in the head applyingpressure to the end of the shank and causing it to expand laterallyinside of the head where it is not held by the jaws and also outside ofthe head.

Figure 1 is a central section of a rivet which is used to form the shankof a button which embodies this invention. Fig. 2 is a central sectionof a disk which is used to form the head of this button. Fig. 3 isacentral section of the button parts and tools before the shank iscompressed to expand the head-holding beads. Fig. 4 is a central sectionof the completed button shown as attached by a fastening-tack to theedge of the garment. Fig. 5 is a side elevation of the finished button.Fig. 6 is a plan showing the outer face of the head, and Fig. 7 is aplan showing the inner face and shank of the finished button.

The circular head 1 of this button is stamped to shape from sheetmetalsuch as iron, steel, or brasswith a central perforation 2. Theouter face of the button is preferably depressed when it is stamped, sothat the walls it will fit closely in the perforation through.

the head, is smooth and of practically uniform diameter-that is, has noshoulder.

In making this button the flanged end of the shank is placed upon ananvil or die-bed 7 and then the sides of the shank are tightly clampedin jaws or laterally-moving dies 8, which encircle the shank and are ofsuch height that they only bind and hold a portion of the stem of theshank, leaving the upper end of the stem unprotected. The head is placedupon the stem and then the end of the stem is subjected to the pressureof a punch or longitudinally-moving die 9. The efl ect of the blows orpressure of the punch upon the end of the stem is to upset the end ofthe stem and form an annular swelling or a bead 10, that overlies theouter face of the head,and also to cause an expansion of the stem orformation of an annular swelling or a bead ll underneath the inner faceof the head. The stem is expanded each side of the head because the headprevents it from expanding where it encircles the stem, and the jaws ortransverse dies prevent the stem from expanding where they hold.

As a result of this method a very simple ma;

chine produces these light, strong, and cheap buttons rapidly andwithout waste. The heads can be stamped from cheap scrap-metal havingsuitable characteristics for taking the desired finish, and the shankswithout shoulders are formed of desirable metal on an ordinaryriveting-machine.

This button is applied to the face of an article of wearing-apparelwhere it is designed to be attached-and then the shank 12 of a metallictack having a large head 13 is thrust through the material of thewearing-apparel and driven into the central socket 6. The shank of thistack is forced very hard into the central socket, so that the end of thetack, which is made slightly smaller than the socket on two sides, willbe expanded and caused to bind against the Walls of the socket, so as tohold the tack and button together. The tack is driven in very forciblyin order to expand the end, and the end of the shank of the button mustbe solid and anvil-like in order to cause this expansion or upsetting ofthe end tack.

I claim as my invention- A metallic button having a long cylindricalshank that is solid at one end and has a smooth GEORGE J. CAPEWELL.

Witnesses:

H. R. WILLIAMS, V. R. HoLooMB.

